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The Preference Lattice

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  • Gregorio Curello
  • Ludvig Sinander

Abstract

Most comparisons of preferences are instances of single-crossing dominance. We examine the lattice structure of single-crossing dominance, proving characterisation, existence and uniqueness results for minimum upper bounds of arbitrary sets of preferences. We apply these theorems to derive new comparative statics theorems for collective choice and under analyst uncertainty, to characterise a general 'maxmin' class of uncertainty-averse preferences over Savage acts, and to revisit the tension between liberalism and Pareto efficiency in social choice.

Suggested Citation

  • Gregorio Curello & Ludvig Sinander, 2024. "The Preference Lattice," CRC TR 224 Discussion Paper Series crctr224_2024_563, University of Bonn and University of Mannheim, Germany.
    • Handle: RePEc:bon:boncrc:crctr224_2024_563
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    File URL: https://www.crctr224.de/research/discussion-papers/archive/dp563
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    References listed on IDEAS

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    Keywords

    preference; lattice; comparative statics; risk-aversion; ambiguity; crown; diamond;
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